Drug-injection type urinary catheter

Abstract

The present invention relates to a drug solution injection type urination catheter, which includes a catheter body having a flexible hollow pipe shape, an expansion tube located near one end of the catheter body and spaced apart from the one end, a urination port connected to the other end of the catheter body for discharging urine from the body, an air injection port connected to the other end of the catheter body for injecting air into the expansion tube, and a drug solution injection port connected to the other end of the catheter body for injecting the drug solution, and when the hollow is viewed in cross section, a urination hole communicating with the urination port, a urination hole communicating with the air injection port, and a drug solution injection port connected to the other end of the catheter body for injecting the drug solution are provided. an air injection hole communicating with the drug solution injection port and a drug solution injection hole communicating with the drug solution injection port are arranged separately from each other, and a plurality of drug solution outlet ports are formed on the circumferential surface of the catheter body, which communicate with the drug solution injection hole and are arranged so as to be spaced apart along the direction in which the catheter body extends. Therefore, by applying the drug solution that has passed through the drug solution injection port and the drug solution injection hole via the drug solution outlet ports to the bladder or urethra, it is possible to perform the specified function, such as local anesthesia or bladder irrigation, uniformly in the longitudinal direction of the urethra, and has the advantages of being easy to insert into the urethra and significantly reducing the occurrence of pain.

Description

[Technical field]

[0001] The present invention relates to a liquid-injection-type urinary catheter, and more specifically, to a liquid-injection-type urinary catheter that is configured to supply a liquid medicinal solution to the urethra and the bladder and can be easily inserted into the urethra to prevent the induction of pain. [Background technology]

[0002] As shown in Figure 1, urine excreted from the kidneys is transported to the bladder via the ureters and then excreted from the body via the urethra. On the other hand, when a patient has difficulty in expelling urine spontaneously, a flexible tube such as a catheter is inserted through the urethra into the bladder to allow urine to be expelled. At this time, in order to prevent bacterial contamination by the catheter or in cases where local anesthesia is required, antibiotics, local anesthetics, etc. are injected from the outside through the catheter and supplied to the bladder and urethra.

[0003] A representative structure of such a catheter is disclosed in [Prior Art Document 1] and will be briefly described below with reference to Figs. 2a and 2b. As shown, the catheter of [Prior Art Document 1] includes an elongated tubular catheter body 401 having a distal end 402 and a proximal end 403, with an exhaust lumen 404 extending from the distal end 402 to the proximal end 403 via a tube 414 within the catheter body 401. The drainage lumen 404 communicates with an opening or eyelet 405 in the catheter body 401 at the distal end 402 of the catheter body 401 so that when used to drain urine from a patient's bladder, urine can flow through the eyelet 405 and into the drainage lumen 404. Additionally, a sleeve portion 406 made of a semi-permeable membrane is formed over the catheter body 401 .

[0004] An instillation lumen 410 extends from the catheter body 401 at the proximal end 403 . The infusion lumen 410 is connected to the sleeve portion 406 by means of a tube 413 that runs along the length of the catheter body 401 . The medicinal solution injected into the sleeve portion 406 through the tube 413 continuously cleanses the periurethral space, preventing the formation of biological film and subsequent bacterial infection. That is, the drug is supplied to the inner surface of the urethra through the sleeve portion 406 made of a semi-permeable membrane, and exerts its medicinal effects.

[0005] The fluid may contain antiseptics, antibiotics or antibacterial agents and / or combinations thereof to prevent bacterial infection of the urethra in contact with the catheter body. Inflation fluid passes through inflation lumen 409 and tubing 412 within catheter body 401 to inflate tube portion 408 .

[0006] However, according to [Prior Art Document 1], because a separately provided sleeve portion 406 is attached to the catheter body 401, there is inevitably a discontinuity in terms of material and shape. This not only makes it difficult to insert the catheter into the urethra, but also causes pain due to friction during the insertion process, resulting in great discomfort to the patient. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Published Patent Publication No. 10-2019-0112010 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention has been devised to solve the problems of the prior art described above, and an object of the present invention is to provide a drug solution injection type urination catheter that can be easily inserted into the urethra and significantly reduces the occurrence of pain. Another object of the present invention is to provide a liquid medicine injection type urinary catheter that can maximize the efficacy of the supplied liquid medicine. [Means for solving the problem]

[0009] In order to achieve the above object, the drug solution injection type urinary catheter according to the present invention comprises: A catheter body having a flexible hollow pipe shape; an inflation tube located near one end of the catheter body and spaced apart from the one end; a urination port connected to the other end of the catheter body for draining urine to the outside of the body; an air injection port connected to the other end of the catheter body for injecting air into the inflation tube; a drug solution injection port connected to the other end of the catheter body for injecting the drug solution; when the hollow is viewed from a cross section, a urination hole communicating with the urination port, an air injection hole communicating with the air injection port, and a liquid medicine injection hole communicating with the liquid medicine injection port are arranged in a state separated from one another, The catheter body is characterized in that a plurality of drug solution outlet ports are formed on the circumferential surface thereof, the outlet ports being connected to the drug solution injection hole and spaced apart along the direction in which the catheter body extends.

[0010] The catheter body is characterized in that a plurality of ring-shaped drug solution dispersion grooves extending circumferentially therearound are formed so as to be spaced apart from each other in the direction in which the catheter body extends, and the drug solution discharge outlet is formed in each of the ring-shaped drug solution dispersion grooves.

[0011] Alternatively, a helical drug solution dispersion groove extending helically along the circumferential direction of the catheter body is formed in the direction in which the catheter body extends, and the drug solution discharge outlet is formed in each of the helical drug solution dispersion grooves.

[0012] The drug solution outlet is formed at a distance on an imaginary line on the circumferential surface that is aligned with the cross-sectional center line of the catheter body, and is formed at an angle with respect to the radial direction of the catheter body when the catheter body is viewed in cross section. The plurality of drug solution outlets are formed along the longitudinal direction of the catheter body, inclined alternately in both directions about the radial direction of the catheter body. The multiple drug solution outlets are characterized in that they are arranged on an imaginary spiral along the circumferential surface of the catheter body. When the catheter body is viewed from a cross section, the catheter body has A first tube having a circular inner circumferential surface and an outer circumferential surface; A second tube that protrudes in an arc shape on the inner circumferential surface of the first tube to form an air injection hole; a third tube that is circumferentially spaced from the second tube and that protrudes in an arc shape on an inner circumferential surface of the first tube to form a drug solution injection hole; Including, The inside of the first tube formed outside the second tube and the third tube forms a urination hole. Effect of the Invention

[0013] According to the present invention having the above-mentioned configuration, the catheter body includes a flexible hollow pipe-shaped catheter body, an inflation tube located near one end of the catheter body and spaced apart from the one end, a urination port connected to the other end of the catheter body for discharging urine to the outside of the body, an air injection port connected to the other end of the catheter body for injecting air into the inflation tube, and a drug solution injection port connected to the other end of the catheter body for injecting the drug solution. When the hollow is viewed from a cross section, the catheter body includes a urination hole communicating with the urination port, an air hole communicating with the air injection port, and a The catheter is characterized in that the air injection hole and the liquid medicine injection hole communicating with the liquid medicine injection port are arranged separately from each other, and the circumferential surface of the catheter body is formed with a plurality of liquid medicine outlet ports which communicate with the liquid medicine injection holes and are arranged so as to be spaced apart along the direction in which the catheter body extends. This has the advantage that the liquid medicine that has passed through the liquid medicine injection port and the liquid medicine injection hole can be applied to the bladder or urethra via the liquid medicine outlet ports, thereby allowing the catheter to perform its intended functions, such as local anesthesia and bladder irrigation, uniformly in the longitudinal direction of the urethra, and can be easily inserted into the urethra, greatly reducing the occurrence of pain.

[0014] Furthermore, according to the present invention, when the catheter body is viewed in cross section, it includes a first tube having circular inner and outer circumferential surfaces, a second tube that protrudes in an arc shape on the inner circumferential surface of the first tube to form an air injection hole, and a third tube that protrudes in an arc shape on the inner circumferential surface of the first tube to form a drug solution injection hole and is spaced circumferentially from the second tube. Therefore, even if the catheter body is bent arbitrarily, hollow blockage and localized pain due to discontinuous bending of the catheter body can be prevented, and durability can be increased.

[0015] Furthermore, according to the present invention, a plurality of ring-shaped drug solution dispersion grooves extending circumferentially around the catheter body are formed so as to be spaced apart from each other in the direction in which the catheter body extends, and a drug solution discharge outlet is formed in each of the ring-shaped drug solution dispersion grooves. The drug solution discharged through the drug solution discharge outlet moves along the ring-shaped drug solution dispersion groove, i.e., along the circumferential direction of the catheter body, and is applied evenly to the inner surface of the urethra, so that the medicinal effect can be achieved uniformly and quickly.

[0016] Furthermore, according to the present invention, a spiral drug solution dispersion groove extending spirally along the circumferential direction of the catheter body is formed in the direction in which the catheter body extends, and the drug solution discharge outlets are formed in each of the spiral drug solution dispersion grooves. The drug solution discharged through the drug solution discharge outlets moves along the spiral drug solution dispersion groove, i.e., along the circumferential direction of the catheter body, and is applied evenly to the inner surface of the urethra, so that the medicinal effect can be achieved uniformly and quickly.

[0017] Furthermore, according to the present invention, the drug solution discharge outlet is formed at a distance on an imaginary line on the circumferential surface that is aligned with the cross-sectional center line of the catheter body, and when the catheter body is viewed in cross section, the drug solution discharge outlet is formed at an incline with respect to the radial direction of the catheter body. This causes the drug solution discharged through the drug solution discharge outlet to move along the drug solution dispersion groove at an even faster speed, thereby enabling the effect of the drug to be rapidly transmitted to the urethra.

[0018] Furthermore, according to the present invention, the multiple medicinal solution outlets are formed along the longitudinal direction of the catheter body, inclined alternately in both directions around the radial direction of the catheter body, so that even when the medicinal solution cannot move well in one circumferential direction due to unique conditions inside the urethra, it is possible to normally apply the medicinal solution.

[0019] Furthermore, according to the present invention, the multiple drug solution discharge ports are arranged on an imaginary spiral along the circumferential surface of the catheter body. Therefore, when viewed in cross section of the catheter body, the positions of the drug solution discharge ports from which the drug solution is strongly discharged are dispersed circumferentially around the catheter body, making it possible to apply the drug solution more uniformly circumferentially around the catheter body. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a diagram showing the urination structure of the body. [Diagram 2] 2a and 2b are diagrams showing the structure of a urinary drainage catheter according to the prior art. [Diagram 3] FIG. 3 is a perspective view showing a first embodiment of a drug solution injection-type urinary catheter according to the present invention. [Figure 4] FIG. 4 is a plan view showing a first embodiment of a drug solution injection-type urinary catheter according to the present invention. [Diagram 5] FIG. 5 is a front view showing a first embodiment of a drug solution injection-type urinary catheter according to the present invention. [Figure 6] FIG. 6 is a cross-sectional view showing one embodiment of the catheter body in the first embodiment of the drug solution injection-type urination catheter according to the present invention. [Figure 7] FIG. 7 is a cross-sectional view showing another embodiment of the catheter body in the first embodiment of the drug solution injection-type urination catheter according to the present invention. [Figure 8] FIG. 8 is a perspective view showing a second embodiment of a drug solution injection-type urinary catheter according to the present invention. [Figure 9] FIG. 9 is a perspective view showing a third embodiment of a drug solution injection-type urinary catheter according to the present invention. [Figure 10] FIG. 10 is a perspective view showing a fourth embodiment of a drug solution injection-type urinary catheter according to the present invention. [Figure 11] FIG. 11 is a diagram showing a state in which a liquid medicine injection type urination catheter according to the present invention is used. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. As shown in Figures 3 to 5, the drug solution injection type urination catheter 1000 of the present invention is intended to pass through the patient's urethra to the bladder to perform involuntary urination function, and includes a catheter body 100 having a flexible, hollow 110 pipe shape, an inflation tube 200 located near one end of the catheter body 100 and spaced apart from the one end, a urination port 300 connected to the other end of the catheter body 100 for discharging urine to the outside of the body, an air injection port 400 connected to the other end of the catheter body 100 for injecting air into the inflation tube 200, and a drug solution injection port 500 connected to the other end of the catheter body 100 for injecting the drug solution. This makes it possible to easily insert the drug solution injection type urination catheter 1000 into the urethra, and has the effect of significantly reducing the pain felt during insertion.

[0022] The urination port 300 is a component for discharging urine from the bladder, the air injection port 400 is a component for preventing the urination catheter 1000 from easily falling out by injecting air into the expansion tube 200 to expand it, and the medicinal liquid injection port 500 is a component for injecting medicinal liquid such as a local anesthetic or bladder irrigant into the bladder and / or urethra.

[0023] As shown in FIG. 6, when the hollow 110 is viewed in cross section, the hollow 110 is composed of a urination hole 111 communicating with the urination port 300, an air injection hole 112 communicating with the air injection port 400, and a drug solution injection hole 113 communicating with the drug solution injection port 500, and the urination hole 111, the air injection hole 112, and the drug solution injection hole 113 are arranged separately from each other. To this end, when the catheter body 100 is viewed in cross section, the catheter body 100 includes a first tube 114 having circular inner and outer circumferential surfaces, a second tube 115 that protrudes in an arc shape from the inner circumferential surface of the first tube 114 to form the air injection hole 112, and a third tube 116 that protrudes in an arc shape from the inner circumferential surface of the first tube 114 to form the drug solution injection hole 113 and is spaced circumferentially from the second tube 115. The inside of the first tube 114 formed outside the second tube 115 and the third tube 116 can form the urination hole 111. With this configuration, even if the catheter body 100 is bent arbitrarily, fluids can flow separately through the urination hole 111, the air injection hole 112 and the drug injection hole 113, and the second tube 115 and the third tube 116 function as reinforcing ribs, thereby maintaining structural strength and durability. That is, it is possible to prevent blockage of the hollow 110 and localized pain caused by discontinuous bending of the catheter body 100, and to increase durability.

[0024] A plurality of liquid drug outlets 120 are formed on the circumferential surface of the catheter body 100, which are connected to the liquid drug injection hole 113 and are spaced apart along the direction in which the catheter body 100 extends. By applying the liquid drug that has passed through the liquid drug injection port 500 and the liquid drug injection hole 113 to the bladder or urethra via the liquid drug outlets 120, it is possible to perform specified functions such as local anesthesia and bladder irrigation.

[0025] In the figure, the liquid medicine injection hole 113 includes a first liquid medicine injection hole 113a through which a local anesthetic flows and a second liquid medicine injection hole 113b through which a bladder cleansing agent flows. The third pipe 116 is composed of a 3_1 pipe 116a and a 3_2 pipe 116b which form the first drug solution injection hole 113a.

[0026] In this regard, as shown in Figs. 3 to 5, the liquid medicine injection port 500 includes a first liquid medicine injection port 500a to which a local anesthetic is supplied and a second liquid medicine injection port 500b to which a bladder cleansing agent is supplied. However, the number of the liquid injection holes 113 and the liquid injection ports 500 may be one or three or more. Meanwhile, a plurality of ring-shaped drug solution dispersion grooves 130 extending circumferentially of the catheter body 100 are formed spaced apart from each other in the extension direction of the catheter body 100, and the drug solution discharge outlets 120 can be formed in each of the ring-shaped drug solution dispersion grooves 130. In this case, it is preferable that only one chemical discharge port 120 is disposed for one ring-shaped chemical dispersion groove 130, and the flow rate is increased to induce rapid diffusion of the discharged chemical solution. As a result, the medicinal solution discharged through the medicinal solution outlet 120 moves along the ring-shaped medicinal solution dispersion groove 130, i.e., along the circumferential direction of the catheter body 100, and is applied evenly to the inner surface of the urethra, so that the medicinal effect can be achieved uniformly and quickly.

[0027] As shown in FIG. 11, the liquid medicine outlets 120 are disposed on both sides of the expansion tube 200, so that the liquid medicine can be supplied not only to the urethra but also to the bladder. The chemical outlet 120 is formed in the chemical dispersion groove 130, but is shown separately so that the relative diameters can be confirmed. Reference numeral 900 denotes a liquid medicine supply tank for supplying liquid medicine to the liquid medicine injection port 500 .

[0028] In another embodiment, as shown in Figures 9 and 10, a spiral drug solution dispersion groove 140 extending spirally around the circumferential direction of the catheter body 100 is formed in the extension direction of the catheter body 100, and the drug solution outlet 120 can be formed in each of the spiral drug solution dispersion grooves 140. In this case, it is preferable that only one chemical discharge port 120 is disposed for one revolution of the spiral chemical dispersion groove 140, thereby inducing rapid diffusion of the discharged chemical solution. As a result, the medicinal solution discharged through the medicinal solution outlet 120 moves along the spiral medicinal solution dispersion groove 130, i.e., along the circumferential direction of the catheter body 100, and is applied evenly to the inner surface of the urethra, so that the medicinal effect can be achieved uniformly and quickly. Furthermore, as shown in Figures 3 and 9, the drug solution discharge port 120 is formed at a distance on an imaginary line on the circumferential surface aligned with the cross-sectional center line of the catheter body 100, and when the catheter body 100 is viewed in cross section, the drug solution discharge port 120 can be formed at an angle with respect to the radial direction of the catheter body 100. With this configuration, the medicinal liquid discharged through the medicinal liquid outlet 120 moves along the medicinal liquid dispersion grooves 130, 140 at a faster speed, so that the medicinal effect can be rapidly delivered to the urethra.

[0029] Furthermore, as shown in FIG. 7, the multiple medicinal solution outlets 120 are formed along the longitudinal direction of the catheter body 100, inclining alternately in both directions centered on the radial direction of the catheter body 100. If the medicinal solution cannot move properly in one circumferential direction due to a special condition inside the urethra, the medicinal solution can be moved in the opposite direction, enabling normal application of the medicinal solution.

[0030] On the other hand, as shown in FIGS. 8 and 10, the plurality of drug solution outlets 120 may be arranged on an imaginary spiral along the circumferential surface of the catheter body 100. As a result, when viewed from a cross-section of the catheter body 100, the positions of the drug solution discharge ports 120, from which the drug solution is strongly discharged, are dispersed circumferentially around the catheter body 100, making it possible to apply the drug solution more uniformly circumferentially around the catheter body 100. In this case, as shown in FIG. 10, when a spiral drug solution dispersion groove 140 is formed extending spirally along the circumferential direction of the catheter body 100, the drug solution discharge port 120 can be arranged on the spiral.

[0031] On the other hand, as shown in FIG. 11, it is preferable to configure the cross-sectional area or diameter of the drug solution outlet 120 to gradually increase from the other end of the catheter body 100 toward the inflation tube 200, in order to prevent a decrease in the amount of injection due to pressure loss during the flow of the drug solution. For example, the diameter of the drug solution outlet 120 may be set to increase continuously from 0.01 mm to 0.1 mm, and two or more outlets may have the same diameter. The diameter of the medicinal solution outlet 120 facing the bladder side can be maintained the same as the diameter of the medicinal solution outlet 120 closest to the inflation tube 200 on the urethra side.

[0032] In Figure 5, unexplained component reference numeral 181 is a first through hole formed in the catheter body 100 and communicating with the urination hole 111, 182 is a second through hole formed in the catheter body 100 and communicating with the air injection hole 112, and 183 is a third through hole formed in the catheter body 100 and communicating with the second medicinal liquid injection hole 113b. Urine in the bladder is discharged to the outside through the first through hole 181, air is supplied to the expansion tube 200 through the second through hole 182, and a medicinal liquid such as a bladder cleansing agent is supplied into the bladder through the third through hole 183.

[0033] The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it will be apparent to those having ordinary skill in the art to which the present invention pertains that various substitutions, modifications and alterations are possible within the scope not departing from the technical spirit of the present invention.

Claims

1. In drug injection type urinary catheters, A catheter body having a flexible hollow pipe shape; an inflation tube located near one end of the catheter body and spaced apart from the one end; a urination port connected to the other end of the catheter body for draining urine to the outside of the body; an air injection port connected to the other end of the catheter body for injecting air into the inflation tube; a drug solution injection port connected to the other end of the catheter body for injecting the drug solution; Including, when the hollow is viewed from a cross section, a urination hole communicating with the urination port, an air injection hole communicating with the air injection port, and a liquid medicine injection hole communicating with the liquid medicine injection port are arranged in a state separated from one another, A drug solution injection type urinary catheter, characterized in that a plurality of drug solution outlets are formed on the circumferential surface of the catheter body, the outlets being connected to the drug solution injection hole and spaced apart along the direction in which the catheter body extends.

2. 2. The drug solution injection type urination catheter according to claim 1, wherein a plurality of ring-shaped drug solution dispersion grooves extending circumferentially of the catheter body are formed so as to be spaced apart from each other in the direction in which the catheter body extends, and the drug solution outlet is formed in each of the ring-shaped drug solution dispersion grooves.

3. 2. The drug solution injection type urinary catheter according to claim 1, characterized in that a helical drug solution dispersion groove extending helically along the circumferential direction of the catheter body is formed in the direction in which the catheter body extends, and the drug solution discharge ports are each formed in the helical drug solution dispersion groove.

4. 4. The drug solution injection type urinary catheter according to claim 2 or 3, characterized in that the drug solution outlet is formed at a distance on an imaginary line on the circumferential surface aligned with a cross-sectional center line of the catheter body, and is formed at an angle with respect to the radial direction of the catheter body when the catheter body is viewed in cross section.

5. 5. The drug solution injection type urination catheter according to claim 4, wherein the drug solution outlets are formed along the longitudinal direction of the catheter body, inclined alternately in both directions about a radial direction of the catheter body.

6. 4. The liquid medicine injection type urinary catheter according to claim 2, wherein the liquid medicine outlets are arranged on an imaginary spiral along the circumferential surface of the catheter body.

7. When the catheter body is viewed from a cross section, the catheter body has a first tube having a circular inner circumferential surface and an outer circumferential surface; a second tube that protrudes in an arc shape from an inner circumferential surface of the first tube to form an air injection hole; a third tube that is circumferentially spaced from the second tube and that has a drug injection hole formed on an inner circumferential surface of the first tube by protruding in an arc shape; Including, 4. The drug solution injection type urination catheter according to claim 2 or 3, wherein the inside of the first tube formed outside the second tube and the third tube forms a urination hole.

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